InfoWorld has a new article posted looking at some of the PHP IDE options out there and comparing some of their strengths and weaknesses including PHPStorm, Eclipse, Aptana and Zend Studio.

PHP is more than just a language for junior high school kids to learn after they master balancing DIV tags in HTML. It can support enterprise-grade installations and deliver the kind of heavy lifting that brings power plants to their knees. [...] To get a flavor for the latest in PHP programming, I spent some time unpacking the current set of development tools for PHP - eight in all.

The IDEs he sampled were:

Zend Studio

PHPStorm

PhpEd

phpDesigner

NetBeans

Komodo IDE

CodeLobster

Aptana Studio

He points out that, while all of these tools have their good and bad things about them, sometimes you don't need something that heavy to get the job done. Sometimes something simpler might do just right. He recommends trying them out on your projects and seeing which is the best fit, though. He thinks that you'd probably "need to be working on a bigger PHP project" before an IDE would become really useful though.